â¢ For identification: type of stem (woody or herbaceous), monocot or dicot, has pubescence (hair) or not (glabrous), shape of stem (square â round), or contains glands. Stem Monocot stem
Constantine enacted another change that helped accelerate the fall of the Roman Empire. In 330 C.E., he split the empire into two parts: the western half centered in Rome and the eastern half centered in Constantinople, a city he named after himself.
The Empire had been split in four since Diocletian at the end of the III century AD, and throughout the IV century barbarian pressures intensified. Rome had already been invaded twice in 410 and 455 by Alaric and Genseric, and Attila had been thwarted by just a miracle.